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Vacuum solutions of Einstein equations that depend on one coordinate 依赖于一个坐标的爱因斯坦方程的真空解
Pub Date : 2023-10-24 DOI: 10.17721/BTSNUA.2020.62.10-11
Вакуумні РОЗВ'ЯЗКИ Зтв
In the famous textbook written by Landau and Lifshitz all the vacuum metrics of the general theory of relativity are derived, which depend on one coordinate in the absence of a cosmological constant. Unfortunately, when considering these solutions the authors missed some of the possible solutions discussed in this article. An exact solution is demonstrated, which is absent in the book by Landau and Lifshitz. It describes space-time with a gravitational wave of zero frequency. It is shown that there are no other solutions of this type than listed above and Minkowski’s metrics. The list of vacuum metrics that depend on one coordinate is not complete without solution provided in this paper.
在朗道和利夫希茨撰写的著名教科书中,所有广义相对论的真空度规都是在没有宇宙常数的情况下依赖于一个坐标推导出来的。不幸的是,在考虑这些解决方案时,作者错过了本文中讨论的一些可能的解决方案。给出了Landau和Lifshitz在书中所没有的精确解。它用零频率的引力波描述时空。结果表明,除了上面列出的和闵可夫斯基指标外,没有其他的解。对于依赖于某一坐标的真空度量表,本文没有给出完整的解法。
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引用次数: 0
Counteraction to the anti-church policy of the soviet government in Ukraine in the 20–30-s of the 20th century: causes, course and consequences 20世纪二三十年代苏联政府在乌克兰反教会政策的反制:原因、过程与后果
Pub Date : 2023-01-01 DOI: 10.12958/2227-2844-2023-2(356)-77-88
O. Bublik
In the article research the resistance of Ukrainians to the anti-religious policy of the Bolsheviks, the first years of their stay in power. The article notes that one of the main characteristic features of the development of Ukrainian historiography at the current stage is the increasing attention of scientists to problems related to the history of church life in Ukraine. This especially applies to the Soviet period of history, when the traditional church, which used to be one of the determining factors in the development of Ukrainian society, suffered a significant blow as a result of the implementation of the anti-church policy of the Soviet government. At the same time, especially in the first decades of the existence of the Bolshevik regime, opposition to the anti-religious policy of the Bolsheviks on the part of the Ukrainian population was quite noticeable. This aspect, in our opinion, needs a more detailed scientific rethinking, which is aimed at this scientific article. Are shown the main directions and types of resistance, its results and consequences for the further implementation of the church policy by the Soviet authorities. It also depicts a complex of punitive repressive measures against the religious communities of Ukraine during the period under study. As a result of the conducted research, the author comes to the conclusion that from the moment the Bolsheviks came to power, their anti-church company encountered spontaneous protests from various religious communities. The protest took various forms – from ignoring and sabotaging the anti-religious initiatives of the Bolshevik government, to active armed resistance against its representatives. This, in turn, led to the intensification of the terror of the Soviet authorities against the church, which, in the end, was forced to recognize the politics and power of the Bolsheviks.
本文研究了乌克兰人对布尔什维克执政初期反宗教政策的抵制。文章指出,现阶段乌克兰史学发展的主要特征之一是科学家越来越关注与乌克兰教会生活史有关的问题。这尤其体现在苏联时期的历史上,传统教会作为乌克兰社会发展的决定性因素之一,由于苏联政府实施反教会政策而遭受了重大打击。与此同时,特别是在布尔什维克政权成立的头几十年,反对布尔什维克反宗教政策的乌克兰人相当明显。这方面,在我们看来,需要一个更详细的科学的反思,这是针对这篇科学文章。显示了抵抗的主要方向和类型,其结果和苏联当局进一步实施教会政策的后果。它还描述了在研究期间对乌克兰宗教团体采取的一系列惩罚性镇压措施。根据所进行的研究,作者得出结论,从布尔什维克掌权的那一刻起,他们的反教会公司就遭到了各种宗教团体的自发抗议。抗议采取了各种形式——从无视和破坏布尔什维克政府的反宗教倡议,到对其代表的积极武装抵抗。这反过来又加剧了苏联当局对教会的恐怖,教会最终被迫承认布尔什维克的政治和权力。
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引用次数: 0
THE INTERACTION OF HUMANS AND THE INFORMATION SPHERE IN THE DIGITAL AGE 数字时代人类与信息领域的互动
Pub Date : 2023-01-01 DOI: 10.17721/2523-4064.2023/8-4/8
M. Kalganov
The article presents the results of the research devoted to the study of the peculiarities of human interaction with the information sphere in the digital age. In particular, the impact of information technologies on human thinking and behavior, social communications and relationships is studied. Special attention is paid to digital platforms and social networks that change human reality, transforming the material context into virtuality. The positive and negative sides of using social networks are also considered, as well as the possible consequences of their use in the long term. In the process of research, the role of information technologies in the modern world and their influence on human behavior and thinking is revealed, the specifics of human interaction with information in the era of information technologies are analyzed, the social and psychological consequences of the use of information technologies and social networks for people are identified, recommendations are developed for the correct use of information technologies and social networks in order to ensure a balanced and healthy human life. It is argued that modern IT has enabled unprecedented access to information and brought people together in new ways, but at the same time created significant challenges such as information overload and the spread of misinformation. It is proven that the development of artificial intelligence and automation of processes is one of the latest trends in the evolution of human interaction with the information sphere, which may eventually lead to radical changes in production processes and the situation on the labor market. The issue of responsible and ethical handling of information technologies is raised due to the significance of their impact on cultural processes on a global scale. The author's argumentation is strengthened by the ideas and opinions of leading modern thinkers on this topic.
本文介绍了一项致力于研究数字时代人类与信息领域互动特性的研究结果。特别是,信息技术对人类思维和行为,社会沟通和关系的影响进行了研究。特别关注改变人类现实的数字平台和社交网络,将物质环境转化为虚拟。还考虑了使用社交网络的积极和消极方面,以及长期使用社交网络可能产生的后果。在研究过程中,揭示了信息技术在现代世界中的作用及其对人类行为和思维的影响,分析了信息技术时代人类与信息互动的具体情况,确定了使用信息技术和社交网络对人们产生的社会和心理后果,制定了正确使用信息技术和社会网络的建议,以确保均衡和健康的人类生活。有人认为,现代信息技术使人们能够前所未有地获取信息,并以新的方式将人们聚集在一起,但同时也带来了信息过载和错误信息传播等重大挑战。事实证明,人工智能和过程自动化的发展是人类与信息领域互动演变的最新趋势之一,这可能最终导致生产过程和劳动力市场状况的根本变化。由于信息技术在全球范围内对文化进程产生重大影响,因此提出了负责任和合乎道德地处理信息技术的问题。作者的论点得到了现代主要思想家关于这一主题的观点和意见的加强。
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引用次数: 0
CONCEPT DEMOCRACY IN THE SPEECHES OF THE WORLD LEADERS IN THE CONTEXT OF RUSSIAN-UKRAINIAN WAR 俄乌战争背景下世界领导人演讲中的民主概念
Pub Date : 2023-01-01 DOI: 10.17721/1728-2659.2023.34.22
Diana Sabadash, Vasylyna Lukaniuk
The article reflects the results of the reconstruction of the concept DEMOCRACY in lexicographic sources and analysis of its actualization in the speeches of Joe Biden, Boris Johnson, Liz Truss, Ursula von der Leyen, and Volodymyr Zelensky in 2022 from the perspective of the Russian-Ukrainian war. Based on the component-semantic analysis of the definitions of the lexeme democracy in eight English-language explanatory dictionaries (Cambridge Dictionary, Oxford Learner's Dictionary, Longman Dictionary of Contemporary English, Macmillan Dictionary, Collins Online Dictionary, Merriam-Webster Online Dictionary and Thesaurus, The Chambers Dictionary, Etymology Online Dictionary) was modeled, which includes core fields (people’s government та system of government), near (country, equality, right to vote) and far (freedom) periphery fields. The study of twelve selected speeches (67 pages of printed text) also made it possible to single out one more field of the far periphery – fight, which is actualized as a result of the objectification of such features of the concept as democracy under threat, union, protect/defend democracy, protect/defend freedom as a result of rethinking the concept of DEMOCRACY in the context of Russia's aggression against Ukraine. It was determined that in the speeches of world leaders in 2022, the concept of DEMOCRACY is verbalized with the help of tokens democracy, people, vote, elect, free, freedom, country, etc. The analysis of the features and frequency of their use indicate that the lexeme democracy in relation to other verbalizers prevails in the speeches of the American president, as evidenced by the number of the word usage – 111 times and Ursula von der Leyen's – 27 times; lexemes people (65 word usages) and country (64 word usages) dominate the speeches of Boris Johnson and Liz Truss; in the speech of Volodymyr Zelensky, free, freedom and people are the predominant verbalizers, which indicates the current priorities in the concept components for representatives of different nations. Contrasting the concepts of DEMOCRACY and AUTOCRACY to characterize Ukraine and its people and the aggressor country and its leader, respectively, reflect changes in the perception of Ukraine and Ukrainians on the world stage.
本文从俄乌战争的角度,反映了词典资源中民主概念重构的结果,并分析了其在乔·拜登、鲍里斯·约翰逊、利兹·特拉斯、乌苏拉·冯·德莱恩和弗拉基米尔·泽伦斯基2022年演讲中的实现情况。通过对8本英语解释性词典(剑桥词典、牛津学习词典、朗曼当代英语词典、麦克米伦词典、柯林斯在线词典、韦氏在线词典和同义词典、钱伯斯词典、词源在线词典)中词素民主定义的成分语义分析,建立了核心域(人民政府та政府体制)、近域(国家、平等、民主、民主)的词素民主定义模型。投票权)和远(自由)外围字段。对12篇精选演讲(67页印刷文本)的研究也使我们有可能挑出另一个远边缘领域-战斗,这是由于在俄罗斯侵略乌克兰的背景下重新思考民主概念,从而将威胁下的民主、联盟、保护/捍卫民主、保护/捍卫自由等概念的特征客观化而实现的。确定在2022年世界领导人的演讲中,民主的概念是通过代币民主,人民,投票,选举,自由,自由,国家等来表达的。对其使用特征和频率的分析表明,美国总统的演讲中普遍存在相对于其他言语者的词素民主,其词汇使用次数为111次,乌苏拉·冯·德·莱恩的使用次数为27次;鲍里斯·约翰逊和利兹·特拉斯在演讲中主要使用的词汇是“人”(65个单词用法)和“国家”(64个单词用法);在Volodymyr Zelensky的演讲中,自由、自由和人民是占主导地位的语言表达者,这表明了不同国家代表在概念组成部分中的当前优先事项。对比民主和专制的概念来分别描述乌克兰及其人民和侵略国及其领导人,反映了对乌克兰和乌克兰人在世界舞台上的看法的变化。
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引用次数: 0
PAIDEIA AS A BASIC IDEA OF XENOPHON’S "CYROPAEDIA" AND HERODIAN’S "HISTORY…" Paideia作为色诺芬的“cyropaedia”和希律王的“history”的基本概念…
Pub Date : 2023-01-01 DOI: 10.17721/1728-2659.2023.34.09
Lesia Zvonska, F. Dovbyshchenko
The results of the study of the main positions of the philosophical-ethical and political dimension of the concept of education (paideia) in Xenophon's "Cyropedia" and Herodian's "History of the Roman State after Marcus Aurelius" are presented. The research methodology of the ancient biographical and historiographical text is briefly substantiated. The narrative strategies of the representation of the principles of education in both works are described in a comparative aspect. The structure of communication and ways of implementing the author's narrative strategy are analyzed through the prism of the cross-cutting idea of both works: the absolute influence of the role of the education of the ruler on the education of society. The concept of paideia is considered as a key meaning-forming element of both works; it is illustrated how the texts of Xenophon and Herodian present paideia as the main condition for the success of the ruler and his state. Common and distinctive features of the implementation of the author's narrative strategy in both works were revealed. Techniques for implementing the author's narrative strategy in the texts of Xenophon and Herodian are illustrated with examples from the original texts with translation. The example of both texts shows the durability of the traditions of writing ancient historiographic biography from the classical to the Hellenistic-Roman era: the similarity of the narrative structure, the presence of two-level communication (author's and narrator's), plot vicissitudes, the location of which in both texts coincides with the place of the golden intersection. It is proved that the texts of Xenophon and Herodian, separated from each other by a rather significant period of time of half a millennium, pursue the same goal: showing the disfunctionality of both an individual and society in general, which deviated from the principles of paideia. The elements of the narrative structure of ancient historiographical texts described in the article testify to its similarity to the structure of ancient tragedy (according to Aristotle).
在色诺芬的《塞浦路斯百科全书》和希律王的《马可·奥勒留之后的罗马国史》中,对教育概念(paideia)的哲学-伦理和政治维度的主要立场进行了研究。简要阐述了古代传记史学文本的研究方法。从比较的角度阐述了两部作品对教育原则的叙事策略。通过两部作品的交叉思想——统治者的教育对社会教育的绝对影响——来分析作者叙事策略的传播结构和实施方式。语意的概念被认为是两部作品的关键意义构成要素;它说明了色诺芬和希律的文本如何将paideia作为统治者及其国家成功的主要条件。揭示了作者在两部作品中运用叙事策略的共同之处和各自的特点。本文以色诺芬和希律的文本为例,通过翻译说明作者在文本中运用叙事策略的技巧。这两个文本的例子表明,从古典时代到希腊罗马时代,古代历史传记写作传统的持久性:叙事结构的相似性,两层交流(作者和叙述者)的存在,情节的变迁,这两个文本的位置都与黄金交叉点的位置一致。事实证明,色诺芬和希律的文本,彼此相隔了半个世纪的相当重要的时期,追求同样的目标:显示个人和社会的一般功能失调,这偏离了paideia的原则。本文所描述的古代史学文本的叙事结构的要素证明了其与古代悲剧结构的相似性(根据亚里士多德)。
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引用次数: 0
The study of history as a factor in the formation of national self-identification of servicemen of the Armed Forces of Ukraine 历史研究是乌克兰武装部队军人形成民族自我认同的一个因素
Pub Date : 2023-01-01 DOI: 10.17721/1728-2217.2023.54.9-14
К. Pyrogov
The importance of the formation of national self-identification among servicemen of the Armed Forces of Ukraine cannot be underestimated, since the full-scale armed aggression of the Russian Federation requires from the defenders of Ukraine not only the performance of their professional work, namely the protection of Ukraine from external threats, but also the motivational component of continuing the fight against the aggressor, which contains identification and understanding of one's place in the world, especially in the Ukrainian nation. The article examines the formation, explanation and justification of the national narrative as a dominant component of the history of Ukraine. The importance of the national narrative in the formation of the personality and self-identification of military personnel is considered. The topic of nationalism is considered as the basis of the national idea and the formation of the nation in modern national states. The negative aspects of the lack of national identification and integration in the collective society and community were considered. This article is devoted to the consideration of the peculiarities of the formation of national identity and history, as the main tool in the formation of self-identification of military personnel of Ukraine, as conscious citizens and participants in the social friendship of Ukrainians. Changing orientations and civilizational challenges that continue in the 21st century require a stable identity for military personnel, but the very process of its formation requires not only theoretical justification, but also practical use during training in higher military educational institutions of Ukraine. The study of history can become one of the methods that can be used by scientific and pedagogical workers for the development of the personality of cadets, therefore the purpose of this article is to scientifically substantiate the study of history as such a method.
在乌克兰武装部队军人中形成民族自我认同的重要性是不能低估的,因为俄罗斯联邦的全面武装侵略不仅要求乌克兰的保卫者履行其专业工作,即保护乌克兰不受外来威胁,而且还要求乌克兰的保卫者继续同侵略者作斗争,它包含了对一个人在世界上的位置的认同和理解,尤其是在乌克兰民族。本文考察了作为乌克兰历史主要组成部分的民族叙事的形成、解释和正当性。考虑到国家叙事在军事人员人格和自我认同形成中的重要性。民族主义话题被认为是现代民族国家的民族观念和民族形成的基础。会议审议了缺乏民族认同和融入集体社会和社区的消极方面。本文致力于考虑民族认同和历史形成的特殊性,这是乌克兰军事人员作为有意识的公民和乌克兰人社会友谊的参与者形成自我认同的主要工具。21世纪不断变化的取向和文明挑战需要军事人员的稳定身份,但其形成过程不仅需要理论证明,而且需要在乌克兰高等军事教育机构的培训中实际使用。历史学习可以成为科学工作者和教育工作者培养学员个性的方法之一,因此,本文的目的就是要科学地证实历史学习这一方法。
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引用次数: 0
CONNECTION OF THE SEMANTICS OF DOUBT AND INDEFINITE REFERENCE 怀疑语义学与不定指称语义学的联系
Pub Date : 2023-01-01 DOI: 10.17721/1728-2659.2023.34.15
Xiaomeng Le
The article is devoted to the analysis of the connection between the semantics of doubt and indefinite reference. Reference as a correlation with reality is carried out by the speaker during the speech act. If such a correlation is unsuccessfully realized in the human mind, then we are talking about the uncertainty of the object. The category of uncertainty is highly subjective and communicative in nature: the meaning of the indefinite reference is transmitted in the process of a specific speech act. The semantic category of doubt is complicated, on the one hand, by connections with the category of certainty/uncertainty, on the other hand, the semantics of doubt and indefinite reference are implemented in specific speech acts and have an obviously subjective nature, which is explained by the fact that when a word enters the speech act, it can have a different semantic content under the influence of many factors, such as the goals of the addressee, the context and the background knowledge of the communication participants. Therefore, from the standpoint of pragmatics, based on the relationship between communicators, there are three situations in which indefinite reference and the semantics of doubt can be realized simultaneously. These 3 situations are: 1) the speaker knows the object inaccurately, the listener knows the object of speech; 2) the speaker knows the object inaccurately, the listener does not know the object of reference; 3) the speaker knows the object but, for whatever reason, does not want the listener to know that it is the object in question. In the third situation, depending on the listener's consciousness, two options are possible: 1) the listener and the speaker have common knowledge, with the listener being one of the insiders of the event described by the speaker, so he knows the speech object, and then a situation of certainty is formed; 2) the listener does not know or does not know exactly the speech object, then an uncertainty situation occurs. Based on row data from the texts of modern mass media, we found out that indefinite reference and the semantics of doubt are emphasized with the help of different linguistic means. Given the results of the analysis of the linguistic data, we consider that indefinite reference and the semantics of doubt are two different sides of the same phenomenon, and they complement each other.
本文分析了怀疑语义与不确定指称之间的关系。指称作为一种与现实的关联,是由说话人在言语行为中进行的。如果这种关联在人的头脑中没有成功地实现,那么我们谈论的就是对象的不确定性。不确定性范畴具有高度的主观性和交际性:不确定指称的意义是在特定言语行为的过程中传递的。怀疑的语义范畴比较复杂,一方面与确定性/不确定性范畴有联系,另一方面,怀疑和不确定指称的语义是在具体的言语行为中实现的,具有明显的主观性,这可以解释为当一个词进入言语行为时,在许多因素的影响下,如收件人的目的,交际参与者的语境和背景知识。因此,从语用学的角度来看,基于交际者之间的关系,有三种情况可以同时实现不确定指称和怀疑语义。这三种情况是:1)说话人对宾语的认识不准确,听者对宾语的认识不准确;2)说话人对宾语的认识不准确,听者对指称对象的认识不准确;3)说话者知道这个物体,但出于某种原因,不想让听者知道它就是这个物体。在第三种情况下,根据听者的意识,有两种可能:1)听者和说话人有共同的知识,听者是说话人所描述的事件的知情人之一,所以他知道说话对象,然后形成一种确定性的情况;2)听者不知道或不确切地知道说话对象,这时就会出现不确定的情况。根据现代大众传媒文本的行数据,我们发现在不同的语言手段的帮助下,不确定的指称和怀疑的语义得到了强调。根据语言学资料的分析结果,我们认为不确定指称和怀疑语义是同一现象的两个不同方面,它们是相辅相成的。
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引用次数: 0
THE PROVING OF THE CATHOLIC DOCTRINE OF THE PRIMACY OF THE POPE BY THE UKRAINIAN POLEMICIST THEODORE SKUMYNOVYCH 乌克兰辩论家西奥多·斯库米诺维奇证明了天主教教义中教皇的首要地位
Pub Date : 2023-01-01 DOI: 10.17721/1728-2659.2023.34.25
R. Tkachuk
The article reveals the arguments of the primacy of the Pope in the universal church given by the Ukrainian Catholic polemicist Theodore Skumynovych in the work "Przyczyny porzucenia Disuniey przezacnemu narodowi ruskiemu podane" (1643). Justifying the supremacy of the Roman cathedra, the writer gave an "argument from history" that Pope Sylvester I, having elevated the bishop of Byzantium Mitrophan to the patriarchal title, founded the Patriarchate of Constantinople. In the context of the history of the Byzantine Church, the Catholic writer raised the question of the legality of the Patriarchs of Constantinople use of the title "oecumenicus episcopus", which the bishops of the Eastern Churches called Pope Leo I at the Council of Chalcedon (451). It is revealed the details of the dispute between Pope Gregory the Great and Patriarch John IV the Faster concerning the naming of the Patriarch of Constantinople as an "oecumenicus episcopus". Theodore Skumynovych considered the historical facts of the appointment and displacement of the first hierarchs of the East to be proof of the judicial supremacy of Rome. In particular, the polemicist talked about the restoration of Athanasius the Great and Paul I in the episcopal cathedra by Pope Julius I. From the "Poluustav" of the Vilnius Holy Spirit Monastery the writer cited the story of the appointment of St. Hippolytus of Rome by the Pope as bishop of Portuen. Proving the primacy of the Roman Church, Theodore Skuminovych relied on the facts of the anathematization of the Byzantine emperors and first hierarchs by the bishops of Rome. The most persuasive example of this was the story of the exile of John Chrysostom from the Constantinople's cathedra. The article provides some details of the episcopal ministry of John Chrysostom, such as: the gist of church reforms, relations with the imperial court and Theophilus of Alexandria and also the appeal to Pope Innocent I. The focus of Theodore Skuminovich's attention is the anathema pronounced by Pope Innocent I against Emperor Arcadius, Eudoxia and the dead at that time Patriarch Arsakiy. The return by Pope Nicholas I to the patriarchal cathedra in Constantinople of Patriach Ignatius served to the polemicist as an argument in favor of the primacy of the Pope. In the story about the displacement of Patriarch Photius, the writer mentioned the Fourth Council of Constantinople (869), which in the Catholic Church is considered the Eighth Ecumenical Council. The Other proofs of the supremacy of the Pope were the information from the lives of Maxim the Confessor, Stephen the New and Theodorit the Studite.
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引用次数: 0
PATHOGENETIC ASPECTS OF POST-COVID-19 COMPLICATIONS IN THE BLOOD COAGULATION SYSTEM covid -19后凝血系统并发症的发病机制
Pub Date : 2023-01-01 DOI: 10.17721/1728.2748.2023.92.17-21
L. Kot, D. Ostapchenko, Oleksandra Basovska, O. Kolenchenko, O. Korotkyi
Disorders in the blood coagulation system play an important role in the pathogenesis and clinical manifestations of COVID-19 both during the acute phase of the disease and in the post-infectious period. The coronavirus disease is associated with a high risk of thrombotic and thromboembolic complications due to a prolonged state of hypercoagulation, which can occur even after recovery. Despite the extremely large amount of scientific data, the pathophysiological aspects of SARS-CoV-2 infection remain uncertain. The presented review summarizes the results of modern scientific research on pathological changes in the hemostasis system that can occur against the background of the transferred coronavirus disease, and considers the main mechanisms of the development of COVID-19-associated coagulopathies. From scientometric databases PubMed, Scopus, Web of science, ScienceDirect, Google Scholar, etc. the latest publications devoted to this issue were selected and analyzed. Hemostasis is a dynamic, tightly regulated process which is provided by three closely interrelated links: coagulation, anticoagulation, and fibrinolytic. Activation of the coagulation cascade and the platelet link of hemostasis, which causes a prothrombotic state in convalescent patients with COVID-19, is primarily associated with dysregulation of the renin-angiotensin system, a long-term local and systemic inflammatory reaction, an increase in the immune response due to the release of pro-inflammatory mediators that interact with platelets, stimulate the expression of tissue factor, suppress the fibrinolytic system and lead to dysfunction of the endothelial cells of blood vessels, triggering thrombogenesis. Understanding the pathogenetic mechanisms of post-COVID-19 complications and monitoring the main markers of hemostasis (level of D-dimer, fibrinogen, prothrombin time, platelet count, etc.) are important for the timely detection of disorders in the blood coagulation system, and make it possible, depending on the clinical situation, to take timely measures for their correction at various stages of pathology development.
凝血系统功能紊乱在COVID-19急性期和感染后的发病机制和临床表现中都起着重要作用。冠状病毒病与血栓形成和血栓栓塞并发症的高风险相关,这是由于长时间的高凝状态,即使在康复后也可能发生。尽管有大量的科学数据,但SARS-CoV-2感染的病理生理方面仍然不确定。本文综述了新型冠状病毒转移性疾病背景下止血系统病理变化的现代科学研究成果,并探讨了新型冠状病毒相关凝血病发生的主要机制。从PubMed、Scopus、Web of science、ScienceDirect、谷歌Scholar等科学计量数据库中选取并分析了该问题的最新研究成果。止血是一个动态的、严格调控的过程,它由三个密切相关的环节提供:凝血、抗凝和纤溶。在COVID-19恢复期患者中,凝血级联和血小板环节的激活导致血栓形成前状态,这主要与肾素-血管紧张素系统的失调有关,这是一种长期的局部和全身炎症反应,由于释放与血小板相互作用的促炎介质而增加免疫反应,刺激组织因子的表达。抑制纤维蛋白溶解系统,导致血管内皮细胞功能障碍,引发血栓形成。了解新冠肺炎后并发症的发病机制,监测主要止血指标(d -二聚体水平、纤维蛋白原、凝血酶原时间、血小板计数等),对于及时发现凝血系统紊乱,并根据临床情况,在病理发展的各个阶段及时采取措施进行纠正具有重要意义。
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引用次数: 0
Detection of hidden periodicities in models with discrete time and long range dependent random noise 具有离散时间和长程相关随机噪声的模型中隐含周期性的检测
Pub Date : 2023-01-01 DOI: 10.17721/1812-5409.2023/1.7
A. Ivanov, I. V. Orlovskyi
Trigonometric regression models take a special place among various models of nonlinear regression analysis and signal processing theory. The problem of estimating the parameters of such models is called the problem of detecting hidden periodicities, and it has many applications in natural and technical sciences. The paper is devoted to the study of the problem of detecting hidden periodicities in the case when we observe only one harmonic oscillation with discrete time, where random noise is a local functional of Gaussian random sequence with singular spectrum. In particular, the random sequence in the model can be strongly dependent. For estimation of unknown parameters the periodogram estimator is chosen. Sufficient conditions of the consistency of the amplitude and angular frequency periodogram estimator of the model described above are obtained in the paper. The proof of Lemmas 1 and 2 gave an important asymptotic properties of the random noise functional related to the periodogram estimator which necessary for the proof of the main results. Series expansion of random noise in terms of Hermite polynomials and the Diagram formula are main tools that were used to obtain this lemmas.
三角回归模型在非线性回归分析和信号处理理论的各种模型中占有特殊的地位。估计这类模型的参数的问题被称为隐藏周期的检测问题,它在自然科学和技术科学中有许多应用。本文研究了在只观察一个离散时间谐波振荡的情况下,随机噪声是奇异谱高斯随机序列的局部泛函时隐藏周期的检测问题。特别是,模型中的随机序列可以是强相关的。对于未知参数的估计,选择周期图估计器。本文给出了上述模型的幅值周期图估计和角频率周期图估计相合的充分条件。引理1和2的证明给出了与周期图估计量相关的随机噪声泛函的一个重要渐近性质,这是证明主要结果所必需的。随机噪声的埃尔米特多项式级数展开式和图解公式是得到该引理的主要工具。
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引用次数: 0
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Visnik Kiivs''kij nacional''nij universitet imeni Tarasa Sevcenka Istoria
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